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What are the number of protons, neutrons, and electrons in the following isotopes?
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Basic Chemistry
- The element rhenium (Re) bas two naturally occurring isotopes, 185Re and 187Re, with an average atomic mass of 186.207 u. Rhenium is 62.60% 187Re, and the atomic mass of 187Re is 186.956 u. Calculate the mass of 185Re.arrow_forwardThe element silver (Ag) has two naturally occurring isotopes: 109 Ag and 107Ag with a mass of 106.905 u. Silver consists of 51.82% 107Ag and has an average atomic mass of 107.868 u. Calculate the mass of 109Ag.arrow_forwardObtain the fractional abundances for the two naturally occurring isotopes of europium. The masses of the isotopes are 151Eu, 150.9196 amu; 153Eu, 152.9209 amu. The atomic weight is 151.9641 amu.arrow_forward
- Define the term atomic weight. Why might the values of atomic weights on a planet elsewhere in the universe be different from those on earth?arrow_forwardWhat number of protons and neutrons is contained in the nucleus of each of the following atoms'? Assuming each atom is uncharged, what number of electrons is present? a. U92235 b. A1327I c. F2657e d. P82208b e. R3786b f. C2041aarrow_forwardThe following table gives the number of protons and neutrons in the nuclei of various atoms. Which atom is the isotope of atom A? Which atom has the same mass number as atom A? Protons Neutrons Atom A 32 39 Atom B 33 38 Atom C 38 50 Atom D 32 38arrow_forward
- Xenon An isotope of xenon has an atomic number of 54 and contains 77 neutrons. What is the xenon isotope’s mass number?arrow_forward1. The mass of an atom of manganese is 54.9380 u. How many neutrons are contained in one atom of this element? 25 29 30 55arrow_forwardWhat particles are found in the nucleus of an atom? What is the charge of the nucleus?arrow_forward
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